Example usage for org.springframework.kafka.config StreamsBuilderFactoryBean StreamsBuilderFactoryBean

Introduction

In this page you can find the example usage for org.springframework.kafka.config StreamsBuilderFactoryBean StreamsBuilderFactoryBean.

Prototype

public StreamsBuilderFactoryBean(KafkaStreamsConfiguration streamsConfig) 

Source Link

Document

Construct an instance with the supplied streams configuration.

Usage

From source file:org.springframework.cloud.stream.binder.kafka.streams.KafkaStreamsStreamListenerSetupMethodOrchestrator.java

@SuppressWarnings({ "unchecked" })
private void buildStreamsBuilderAndRetrieveConfig(Method method, ApplicationContext applicationContext,
        String inboundName) {//from  w w  w .  ja va  2 s.co m
    ConfigurableListableBeanFactory beanFactory = this.applicationContext.getBeanFactory();

    Map<String, Object> streamConfigGlobalProperties = applicationContext
            .getBean("streamConfigGlobalProperties", Map.class);

    KafkaStreamsConsumerProperties extendedConsumerProperties = this.kafkaStreamsExtendedBindingProperties
            .getExtendedConsumerProperties(inboundName);
    streamConfigGlobalProperties.putAll(extendedConsumerProperties.getConfiguration());

    String applicationId = extendedConsumerProperties.getApplicationId();
    //override application.id if set at the individual binding level.
    if (StringUtils.hasText(applicationId)) {
        streamConfigGlobalProperties.put(StreamsConfig.APPLICATION_ID_CONFIG, applicationId);
    }

    int concurrency = this.bindingServiceProperties.getConsumerProperties(inboundName).getConcurrency();
    // override concurrency if set at the individual binding level.
    if (concurrency > 1) {
        streamConfigGlobalProperties.put(StreamsConfig.NUM_STREAM_THREADS_CONFIG, concurrency);
    }

    Map<String, KafkaStreamsDlqDispatch> kafkaStreamsDlqDispatchers = applicationContext
            .getBean("kafkaStreamsDlqDispatchers", Map.class);

    KafkaStreamsConfiguration kafkaStreamsConfiguration = new KafkaStreamsConfiguration(
            streamConfigGlobalProperties) {
        @Override
        public Properties asProperties() {
            Properties properties = super.asProperties();
            properties.put(SendToDlqAndContinue.KAFKA_STREAMS_DLQ_DISPATCHERS, kafkaStreamsDlqDispatchers);
            return properties;
        }
    };

    StreamsBuilderFactoryBean streamsBuilder = this.cleanupConfig == null
            ? new StreamsBuilderFactoryBean(kafkaStreamsConfiguration)
            : new StreamsBuilderFactoryBean(kafkaStreamsConfiguration, this.cleanupConfig);
    streamsBuilder.setAutoStartup(false);
    BeanDefinition streamsBuilderBeanDefinition = BeanDefinitionBuilder
            .genericBeanDefinition((Class<StreamsBuilderFactoryBean>) streamsBuilder.getClass(),
                    () -> streamsBuilder)
            .getRawBeanDefinition();
    ((BeanDefinitionRegistry) beanFactory).registerBeanDefinition("stream-builder-" + method.getName(),
            streamsBuilderBeanDefinition);
    StreamsBuilderFactoryBean streamsBuilderX = applicationContext
            .getBean("&stream-builder-" + method.getName(), StreamsBuilderFactoryBean.class);
    this.methodStreamsBuilderFactoryBeanMap.put(method, streamsBuilderX);
}

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